Radiologic science physics Bushong
Ch. 8 9 10 11
Grays in air the measurement for ray - answer exposure mR Air Kerma mAs
the number of x-rays in the useful beam defines x-ray - answerquantity
standard x-ray machines produce about ____ uGya/mAs at 70kVp at 100cm SID -
answer50 uGya or 5 mR
x-ray quantity increase in direct proportion to increase in - answermAs
If distance from the source to the image SID is reduced by half, how is the x-ray
intensity at the image affected? - answerIncreased by a factor of 4
If filter thickness is ______ then xray intensity is ______ - answerincreased, decreased;
decreased, increased
If the quantity of electron hitting the target are doubled, the x-ray quantity is -
answerdoubled or increased a 100%
The inverse square law has the same effect on optical density and x-ray -
answerintensity, exposure, quantity, mAs, and density
An increase of 15% in kVp is equivalent to increasing mAs - answerdouble, 2 times, or
100%
The penetrability of an x-ray beam is called x-ray - answerquality
Beam quality is affected by - answerkVp and filtration
Half value layer (HVL) measuring x ray beam - answerquality halfed
The HVL is lowered by decreasing - answerkVp
The main purpose of added filtration is to reduce - answerpatient dose
A compensating filter is used to create uniform optical density with a body part of -
answernon uniform
the two primary forms of x ray interaction in diagnostic range are - answerphotoelectric
and compton
Ch. 8 9 10 11
Grays in air the measurement for ray - answer exposure mR Air Kerma mAs
the number of x-rays in the useful beam defines x-ray - answerquantity
standard x-ray machines produce about ____ uGya/mAs at 70kVp at 100cm SID -
answer50 uGya or 5 mR
x-ray quantity increase in direct proportion to increase in - answermAs
If distance from the source to the image SID is reduced by half, how is the x-ray
intensity at the image affected? - answerIncreased by a factor of 4
If filter thickness is ______ then xray intensity is ______ - answerincreased, decreased;
decreased, increased
If the quantity of electron hitting the target are doubled, the x-ray quantity is -
answerdoubled or increased a 100%
The inverse square law has the same effect on optical density and x-ray -
answerintensity, exposure, quantity, mAs, and density
An increase of 15% in kVp is equivalent to increasing mAs - answerdouble, 2 times, or
100%
The penetrability of an x-ray beam is called x-ray - answerquality
Beam quality is affected by - answerkVp and filtration
Half value layer (HVL) measuring x ray beam - answerquality halfed
The HVL is lowered by decreasing - answerkVp
The main purpose of added filtration is to reduce - answerpatient dose
A compensating filter is used to create uniform optical density with a body part of -
answernon uniform
the two primary forms of x ray interaction in diagnostic range are - answerphotoelectric
and compton
